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JMUB vs MUB: Differences, Returns & Fees

On May 31, 2026 JMUB's duration was 6.2 years and MUB's 6.3; MUB charges 0.05% to JMUB's 0.18%. Net assets on Oct 9, 2026: $8.5bn for JPMorgan Municipal ETF and $48.9bn for iShares National Muni Bond ETF.

MUB costs 0.13 points a year less; their one-year returns differ by 0.1 points; MUB is 5.7 times larger.

JMUBMUB
Expense ratio0.18%0.05%
Net assets$8.5bn$48.9bn
Total return, 1 year−2.1%−2.0%
What it tracksNo index, actively managedICE AMT-Free US National Municipal Index
Holdings in common3%
Below its high5.0%, high on Jul 6, 20265.3%, high on Jul 6, 2026

Holdings in common uses holdings dated May 31, 2026.

−2.1%
JMUB total return, 1 year
−2.0%
MUB total return, 1 year
0.18%
JMUB expense ratio
0.05%
MUB expense ratio

What they hold in common

By the books each fund has filed, JMUB and MUB hold 3% of their money in the same securities at the same weight. Above 50%, holding both is close to holding one of them twice. Holdings dated May 31, 2026.

half

3% in common

Positions both hold, largest shared weight first
Holding JMUB MUB
Chicago Transit Authority Sales Tax Receipts Fund, Series 2024A, due Dec 1, 2049 0.18% 0.11%
District of Columbia, Georgetown University Issue, Series 2025A, due Apr 1, 2060 0.30% 0.10%
Commonwealth of Massachusetts, Consolidated Loan of 2023, Series 2023A, due May 1, 2048 0.18% 0.08%
Port of Tacoma, Subordinate Lien, Series 2008B, due Dec 1, 2044 0.11% 0.08%
City of Los Angeles, Series 2025, due Jun 25, 2026 0.17% 0.06%
New York City Transitional Finance Authority, Future Tax Secured, Fiscal Year 2022, Series 2022C, Subseries C-1, due Feb 1, 2047 0.09% 0.05%
State of Wisconsin, Series 2026A, due May 1, 2038 0.42% 0.05%
Grand Parkway Transportation Corp., Grand Parkway System Subordinate Tier, Series 2020C, due Oct 1, 2045 0.07% 0.05%
Ohio Water Development Authority Water Pollution Control Loan Fund, Series 2025, due Dec 1, 2035 0.14% 0.05%
Grand Parkway Transportation Corp., Grand Parkway System Subordinate Tier, Series 2020C, due Oct 1, 2049 0.04% 0.05%
New York City Transitional Finance Authority, Future Tax Secured, Fiscal Year 2022, Series 2022B, Subseries B-1, due Aug 1, 2045 0.04% 0.04%
Triborough Bridge and Tunnel Authority, MTA Bridges and Tunnels, Series 2012B, due Nov 15, 2032 0.09% 0.04%
Only in JMUB
Black Belt Energy Gas District, Gas Project, Series 2026A, due Dec 1, 2034 0.77%
California Community Choice Financing Authority, Clean Energy Project, Series 2026B, due Mar 1, 2036 0.70%
California Health Facilities Financing Authority, Rady Children's Health, Series 2026B-3, due Aug 15, 2065 0.67%
California Community Choice Financing Authority, Clean Energy Project, Series 2026C, due Feb 1, 2036 0.61%
Buckeye Tobacco Settlement Financing Authority, Series 2020B-2, Class 2, due Jun 1, 2055 0.55%
Connecticut State Health and Educational Facilities Authority, Yale New Haven Health Issue, Series 2024C-1, due Jul 1, 2060 0.52%
Puerto Rico Sales Tax Financing Corp. Sales Tax, Series A-2, due Jul 1, 2040 0.51%
California Community Choice Financing Authority, Clean Energy Project, Series 2025E, due Oct 1, 2056 0.49%
Only in MUB
Board of Regents of the University of Texas System, Series 2025B, due Aug 15, 2036 0.19%
New York State Thruway Authority, Series 2022A, due Mar 15, 2048 0.15%
San Antonio Water System, Series 2025D, due May 1, 2055 0.14%
Triborough Bridge & Tunnel Authority, Series 2005B-2, due Jan 1, 2032 0.14%
New York City Transitional Finance Authority Future Tax Secured, Series 2019C-4, due Nov 1, 2044 0.13%
Ohio State University (The), Series 2026A, due Jun 1, 2035 0.13%
Houston Higher Education Finance Corp., Series 2024, due May 15, 2034 0.13%
Northwest Independent School District, Series 2025, due Feb 15, 2055 0.13%

Check overlap with more funds →

On the same fields

JMUB
JPMorgan Municipal ETF
MUB
iShares National Muni Bond ETF
Where it sits Bond ETF Bond ETF
Issuer JPMorgan iShares
What it is Actively managed Tracks an index of National Muni Bond
Total return, 1 year −2.1% −2.0%
S&P 500 over the same days +17.3% +17.3%
Gap to the S&P 500 −19.3 pts −19.3 pts
Expense ratio 0.18% 0.05%
Holdings 2155 7448
Net assets $8.5bn $48.9bn

JMUB and MUB on the fields both publish, as of Oct 9, 2026. Source: ETFIQ.

JMUB in plain words

JMUB is actively managed and tracks no index. Over the year to Oct 9, 2026 it returned −2.1% with distributions reinvested. The prospectus expense ratio is 0.18% a year. It sat 5.0% below its high of Jul 6, 2026 on Oct 9, 2026.

MUB in plain words

MUB tracks an index of National Muni Bond. Over the year to Oct 9, 2026 it returned −2.0% with distributions reinvested. The prospectus expense ratio is 0.05% a year. It sat 5.3% below its high of Jul 6, 2026 on Oct 9, 2026.

Questions people ask

Which returned more over the last year, JMUB or MUB?
In the year to Oct 9, 2026, with distributions reinvested, JMUB returned −2.1% and MUB −2.0%.
Which is cheaper, JMUB or MUB?
MUB is cheaper, by 0.13 percentage points a year. That is about $13 on $10,000 held for a year. Fees come from each fund's prospectus.
Other comparisons
JMUB vs VTEBJMUB vs PZAJMUB vs SCMBJMUB vs LMUBMUB vs PZAMUB vs SCMBMUB vs TFIMUB vs VCRM
JMUB on its own →MUB on its own →Hold both: look the portfolio through →Rankings →Standards and sources →
Where these figures came from
JMUB filings on SEC EDGAR ↗JMUB prospectus with the expense ratio (SEC) ↗JPMorgan website ↗MUB filings on SEC EDGAR ↗MUB prospectus with the expense ratio (SEC) ↗iShares page for MUB ↗

ETFIQ links to the documents behind every figure; a link is not an endorsement. A comparison is not a recommendation.

How this is computed

Overlap adds up the smaller of the two weights for each security both funds hold.

Cite this pageCitation, APA and Markdown

ETFIQ, JMUB against MUB, data as of Oct 9, 2026. https://etfiq.com/compare/any/jmub-vs-mub

Open data

Free to use with attribution for figures ETFIQ computes; issuer data stays under its owner's terms.